WISRD Research & Engineering Journal

Figure 19. Close up of wavy print. Print number 2 of the Hog Slat v.2 (Fig. 20) printed properly but did not have the desired number of layers because we did not correctly estimate the amount of clay that would be needed to do another print and did not have enough to finish print 2. Consequently, it cracked due to not having enough layers for structural strength. We fired this print, as it still turned out well, despite the cracking. The cracks in the print were repaired using Amazing Goop ® Marine Contact Adhesive. It is waterproof and adheres to ceramic, as well as having a bond strength of 3800 pounds per square inch (PSI).

Figure 20. Picture (top view) of Print 2. Prints 3 and 4 (Fig. 21) were made back-to-back on a different day. Print 3 stuck too tightly to the printing surface and cracked in several places when we attempted to move it to the kiln tile. It cracked more while drying, then even more when being transported to the school from Joe’s house to the point where it was unusable. Print 4 was our best-looking print in that it was neat with straight lines. However, it had fewer layers as we were running short on clay and had to stop the

85